SessionManagement5SetToken.java

package servlets.module.challenge;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.Locale;
import java.util.ResourceBundle;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;
import org.owasp.esapi.ESAPI;
import org.owasp.esapi.Encoder;

import utils.ShepherdLogManager;
import utils.Validate;
import dbProcs.Database;

/**
 * Session Management Challenge Five SessionManagement5SetToken
 * (Does not Return Result Key)
 * 
 * This function is a shell to give the appearance that a token has been set for a user. 
 * A DB call is made to check if a user exists. If the user does exist the server returns an ok message 
 * claiming that the user has been emailed a URL with a token embedded for resetting their password. 
 * This in fact does not happen. User must find another way to sign in as an admin.
 * 
 * <br/><br/>
 * This file is part of the Security Shepherd Project.
 * 
 * The Security Shepherd project is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.<br/>
 * 
 * The Security Shepherd project is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.<br/>
 * 
 * You should have received a copy of the GNU General Public License
 * along with the Security Shepherd project.  If not, see <http://www.gnu.org/licenses/>. 
 * @author Mark Denihan
 *
 */
public class SessionManagement5SetToken extends HttpServlet
{
	private static final long serialVersionUID = 1L;
	private static org.apache.log4j.Logger log = Logger.getLogger(SessionManagement5SetToken.class);
	private static String levelName = "SessionManagement5SetToken";
	public static String levelHash = SessionManagement5.levelHash;
	/**
	 * Used to apparently send a message to a user with a token to reset their password.
	 * 
	 * @param userName Sub schema user name
	 */
	public void doPost (HttpServletRequest request, HttpServletResponse response) 
	throws ServletException, IOException
	{
		//Setting IpAddress To Log and taking header for original IP if forwarded from proxy
		ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"));
		HttpSession ses = request.getSession(true);
		
		//Translation Stuff
		Locale locale = new Locale(Validate.validateLanguage(request.getSession()));
		ResourceBundle errors = ResourceBundle.getBundle("i18n.servlets.errors", locale);
		ResourceBundle bundle = ResourceBundle.getBundle("i18n.servlets.challenges.sessionManagement.sessionManagement5", locale);
		
		if(Validate.validateSession(ses))
		{
			ShepherdLogManager.setRequestIp(request.getRemoteAddr(), request.getHeader("X-Forwarded-For"), ses.getAttribute("userName").toString());
			log.debug(levelName + " servlet accessed by: " + ses.getAttribute("userName").toString());
			PrintWriter out = response.getWriter();  
			out.print(getServletInfo());
			Encoder encoder = ESAPI.encoder();
			String htmlOutput = new String();
			log.debug(levelName + " Servlet Accessed");
			try
			{
				log.debug("Getting Parameters");
				Object nameObj = request.getParameter("subUserName");
				String userName = new String();
				if(nameObj != null)
					userName = (String) nameObj;
				log.debug("subName = " + userName);
				
				log.debug("Getting ApplicationRoot");
				String ApplicationRoot = getServletContext().getRealPath("");
				log.debug("Servlet root = " + ApplicationRoot );
				
				Connection conn = Database.getChallengeConnection(ApplicationRoot, "BrokenAuthAndSessMangChalFive");
				log.debug("Checking name");
				PreparedStatement callstmt;
				
				log.debug("Committing changes made to database");
				callstmt = conn.prepareStatement("COMMIT");
				callstmt.execute();
				log.debug("Changes committed.");
				
				callstmt = conn.prepareStatement("SELECT userName FROM users WHERE userName = ?");
				callstmt.setString(1, userName);
				log.debug("Executing findUser");
				ResultSet resultSet = callstmt.executeQuery();
				//Is the username valid?
				if(resultSet.next())
				{
					log.debug("User found");
					htmlOutput = bundle.getString("setToken.sentTo.1") + " '" + encoder.encodeForHTML(userName) + "' " +  bundle.getString("setToken.sentTo.2");
				}
				else
				{
					log.debug("User not Found");
					htmlOutput = bundle.getString("response.badUser") + "" + encoder.encodeForHTML(userName);
				}
				Database.closeConnection(conn);
				log.debug("Outputting HTML");
				out.write(htmlOutput);
			}
			catch(Exception e)
			{
				out.write(errors.getString("error.funky"));
				log.fatal(levelName + " - " + e.toString());
			}
		}
		else
		{
			log.error(levelName + " servlet accessed with no session");
		}
	}
}